No Bake - Mix 3½ cups peanut butter, ¾ cup butter, softened 3¾ cups powdered sugar ½ cup brown sugar, ½ Tbsp vanilla press in foil lined 11x13 pan. Melt 6 ounces chocolate chips 1T milk Peanut Butter Squares are the classic school lunchroom treat from your childhood. This no-bake dessert has a thick layer of peanut butter topped with a layer of chocolate.